void ento::CheckObjCInstMethSignature(const ObjCImplementationDecl* ID,
BugReporter& BR) {
const ObjCInterfaceDecl* D = ID->getClassInterface();
const ObjCInterfaceDecl* C = D->getSuperClass();
if (!C)
return;
ASTContext& Ctx = BR.getContext();
// Build a DenseMap of the methods for quick querying.
typedef llvm::DenseMap<Selector,ObjCMethodDecl*> MapTy;
MapTy IMeths;
unsigned NumMethods = 0;
for (ObjCImplementationDecl::instmeth_iterator I=ID->instmeth_begin(),
E=ID->instmeth_end(); I!=E; ++I) {
ObjCMethodDecl* M = *I;
IMeths[M->getSelector()] = M;
++NumMethods;
}
// Now recurse the class hierarchy chain looking for methods with the
// same signatures.
while (C && NumMethods) {
for (ObjCInterfaceDecl::instmeth_iterator I=C->instmeth_begin(),
E=C->instmeth_end(); I!=E; ++I) {
ObjCMethodDecl* M = *I;
Selector S = M->getSelector();
MapTy::iterator MI = IMeths.find(S);
if (MI == IMeths.end() || MI->second == 0)
continue;
--NumMethods;
ObjCMethodDecl* MethDerived = MI->second;
MI->second = 0;
CompareReturnTypes(MethDerived, M, BR, Ctx, ID);
}
C = C->getSuperClass();
}
}
Stmt* ParentMap::getParent(Stmt* S) const {
MapTy* M = (MapTy*) Impl;
MapTy::iterator I = M->find(S);
return I == M->end() ? 0 : I->second;
}